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Diodes Incorporated APX803L-27W5-7
- Part No.:
- APX803L-27W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Supervisors
- Package:
- SC-74A, SOT-753
- Datasheet:
-
APX803L-27W5-7.pdf
- Description:
- RESET GENERATOR SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
APX803L-27W5-7 from Diodes Incorporated is a micro-power voltage detector IC designed for µP supervisory circuits, providing precise 2.7V threshold detection with ±1.5% accuracy, 1µA typical supply current, and 220ms reset timeout. It features open-drain active-low RESET output and operates across -40°C to +85°C ambient range in battery-powered embedded systems.
For engineers reviewing the APX803L-27W5-7 datasheet, APX803L-27W5-7 pinout, APX803L-27W5-7 application, or APX803L-27W5-7 equivalent, this page delivers verified electrical specs, SOT25 package layout, real-world use cases in portable equipment and microcontroller power monitoring, and validated alternative parts with documented timing and threshold differences.
Technical Context
The APX803L-27W5-7 implements a fixed-threshold voltage monitor with internal 2.7V reference (±1.5% tolerance), hysteresis of 0.01×VTH, and temperature coefficient of 50 ppm/°C. Its reset assertion occurs within 20µs when VCC drops below 2.7V and remains active for 220ms after recovery.
It uses an open-drain NMOS output stage capable of sinking 20mA, supports 0.9V–5.5V supply range, and requires no external components. The device integrates factory-trimmed delay timing and operates reliably under ±4000V HBM ESD stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Detection Threshold | 2.7V ±1.5% - precisely monitors 2.7V rail for brownout detection in low-voltage µP systems |
| Supply Current | 1.0µA typical - enables multi-year operation in coin-cell–powered IoT sensors |
| Reset Timeout | 220ms - ensures sufficient hold time for full µP initialization after power recovery |
| Response Time | 20µs - guarantees fast fault capture before system state corruption |
| Operating Voltage | 0.9V to 5.5V - supports wide-input LDO outputs and Li-ion battery ranges |
| Output Type | Open-drain, active-low - allows wired-OR reset bus sharing and flexible pull-up selection |
| Temperature Range | -40°C to +85°C - qualified for industrial and portable consumer environments |
Pinout & Package
SOT25 (5-pin) package with 1.6mm × 2.8mm footprint, thermal resistance θJA = 200°C/W, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage |
| 2 | RESET | Open-drain active-low reset signal output; requires external pull-up |
| 3 | VCC | Power supply input; powers internal bandgap and comparator circuitry |
| 4, 5 | NC | No connection - electrically isolated, must remain unconnected |
Key Features
| Feature | Design Value |
|---|---|
| Fixed 2.7V threshold | Factory-trimmed reference eliminates need for external resistor divider or calibration |
| 220ms reset timeout | Internally generated delay ensures reliable µP reset duration without capacitor dependency |
| 1µA supply current | Enables integration into always-on wake-up circuits without measurable battery drain |
| ±1.5% threshold accuracy | Reduces false resets in margin-constrained 2.7V logic rails (e.g., ARM Cortex-M0+ cores) |
| Open-drain output | Supports multi-source reset arbitration and compatibility with 1.8V–5V I/O domains |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 battery with ultra-low quiescent current requirement. IC Role / Device Role / Timing Role: Monitors 2.7V regulated supply to assert RESET if voltage sags during RF transmission burst. Use Value: Prevents firmware crash during transient load dips while consuming only 1µA-extending battery life beyond 3 years. |
Use Scenario: DIN-rail mounted analog input module operating in factory-floor environments with fluctuating 24VDC supplies. IC Role / Device Role / Timing Role: Supervises local 2.7V LDO output feeding FPGA configuration memory and ADC reference. Use Value: Ensures deterministic FPGA reconfiguration after brownout via 220ms guaranteed reset pulse width. |
| Smart Home Hub Controllers | Automotive Body Control Modules (Non-AEC) |
Use Scenario: Wi-Fi–enabled home automation hub using dual-supply architecture with 2.7V core rail. IC Role / Device Role / Timing Role: Detects undervoltage on 2.7V domain and holds MCU in reset until stable post-power-up sequence completes. Use Value: Eliminates boot failures caused by slow-rising 2.7V LDOs, improving first-time power-on reliability. |
Use Scenario: Aftermarket LED lighting controller connected to vehicle battery with cold-crank voltage dips to 6V. IC Role / Device Role / Timing Role: Monitors 2.7V auxiliary rail derived from buck converter; asserts RESET during cranking events. Use Value: Maintains safe LED state (off) during voltage transients, avoiding erratic behavior without AEC-Q100 qualification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803E27DBVR | 2.7V threshold, 200ms timeout, 0.5µA supply current, SOT-23-3 package | Lacks NC pins; requires PCB redesign for 3-pin footprint; lower ICC benefits battery life but offers no hysteresis spec | Select when minimizing board area and supply current is critical; verify reset timing compatibility with host µP. |
| MAX809SEUR+T | 2.7V threshold, 140ms timeout, 10µA supply current, SOT-23-3 package | Higher ICC increases battery load; shorter timeout may cause premature release in noisy 2.7V rails | Choose only if legacy design reuse is required; avoid in new energy-sensitive designs due to 10× higher ICC. |
Compared with TLV803E27DBVR and MAX809SEUR+T, the APX803L-27W5-7 provides optimal balance of ultra-low ICC (1µA), precise 220ms timeout alignment with common µP requirements, and SOT25's enhanced thermal performance-making it superior for space-constrained, long-life portable systems.
Availability
APX803L-27W5-7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart home hub controllers, and automotive body control modules requiring stable component supply and long-term manufacturability.
Supply support for APX803L-27W5-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
The APX803L series belongs to Diodes' precision voltage supervisor product line, engineered specifically for low-power, high-accuracy power monitoring in battery-operated and industrial embedded systems where reliability and minimal quiescent current are critical.
FAQ
What is the exact reset threshold voltage and tolerance for APX803L-27W5-7?
The APX803L-27W5-7 has a nominal reset threshold of 2.7V with ±1.5% accuracy over -40°C to +85°C ambient temperature. This is confirmed in the Electrical Characteristics table (page 4 of DS38171 Rev. 3-2), where VTH is specified as 2.7V with ∆VTH = ±1.5% at TA = +25°C and maintained across full operating range.
Does APX803L-27W5-7 require external components for basic operation?
No external components are required. The device integrates a factory-trimmed 2.7V reference, internal timing network for 220ms reset timeout, and open-drain output stage. Only an external pull-up resistor on the RESET pin is needed for proper logic-level translation-no capacitors, resistors, or trimming elements are necessary.
Can APX803L-27W5-7 be used in automotive applications?
The APX803L-27W5-7 is not AEC-Q100 qualified and is intended for industrial and consumer applications. Diodes Incorporated explicitly states that automotive-grade variants require separate change control, PPAP capability, and IATF 16949 manufacturing-none of which apply to this SOT25-packaged part per its ordering information and marking data.
How does the 220ms reset timeout behave across temperature?
The 220ms timeout (APX803L20 variant) varies from approximately 143ms at -40°C to 297ms at +85°C, as shown in Figure 5 (page 5 of DS38171). This monotonic increase is inherent to the internal RC timing network and is fully characterized-no derating or compensation is required for design-in.
APX803L-27W5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Voltage Detector
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.7V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 0ms Typical
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
APX803L-27W5-7 FAQ
1.How can I place an order for APX803L-27W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for APX803L-27W5-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for APX803L-27W5-7 reliable?
The price and inventory of APX803L-27W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for APX803L-27W5-7 is usually 5 days.
3.What payment methods are accepted for APX803L-27W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for APX803L-27W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for APX803L-27W5-7?
APX803L-27W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your APX803L-27W5-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for APX803L-27W5-7?
For technical support, including APX803L-27W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your APX803L-27W5-7 requirements.
6.How does Aetrix verify that APX803L-27W5-7 is sourced from the original manufacturer or authorized distributors?
All APX803L-27W5-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that APX803L-27W5-7 meets industry standards.
7.What is the process for return or replacement of APX803L-27W5-7?
All APX803L-27W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with APX803L-27W5-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The APX803L-27W5-7 part is unused and in its original packaging.
Return procedure for APX803L-27W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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-
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